Abstract: A heating device for a system for distributing windshield washer fluid of a motor vehicle. The heating device may include a sleeve comprising two flow channels for distributing the windshield washer fluid, the two flow channels being parallel to one another. The heating device may include at least two heating conductors embedded in a mass of the sleeve. The heating device may include a current regulator controlling the current flowing in the heating conductors as a function of a temperature of said heating conductors.

Abstract: Described is a rejuvenation method for a cable used in a subsea environment. The method includes applying a bias signal to a conducting element of the cable, the bias signal being selected to improve the insulation properties of the cable. The bias signal is selected such that, in the event of an electrical leakage current of predetermined magnitude flowing between the conducting element and a salt containing liquid of the subsea environment at a fault location. The bias signal can be a voltage which promotes an electrochemical reaction between the conducting element and the liquid resulting in the formation of a barrier material at the fault location restricting further leakage current flow and enhancing the insulation resistance of the cable. The bias signal is selected such that the electrochemical reaction promoted by the bias signal maintains the presence of the barrier material at the fault location.

Abstract: The invention concerns an electrical cartridge heater (1) with supply cable (7), wherein the cartridge heater (1) comprises a metal jacket (2), in which at least one electrical conductor (3) is arranged in an insulated fashion, which conductor is connected with a metal terminal pin (6) protruding from the jacket (2), wherein the supply cable (7) is exposed at an end region, is enclosed in the exposed region by a housing, wherein the housing encloses a contact bush (10) fixed at the free end of the supply cable (7), into which contact bush the terminal pin (6) can be inserted or is inserted, wherein finally the housing is connected or can be connected immediately detachably with the cartridge heater (1), which while keeping the advantage of the easy exchangeability of the cartridge heater without supply cable, secures a simplified manufacture, a safe assembly and a high tightness against environmental influences such as hydraulic oil, splash or surge water.

Abstract: A heater strip for use as a heating element in an electric heater is made up of a profiled strip made of a flat metallic material forming a resistor section and of mounting elements extending over one common longitudinal side and they are manufactured as one piece with the resistor section for mounting the heater strip to a support. The strip has a zigzag-shaped structure. The mounting elements are provided only on the flat leg sections of the zigzag-shaped heater strip.

Abstract: A chip resistor (R1) includes a resistor element (1) having a first surface (1a) and a second surface (1b) opposite to the first surface. Two main electrodes (21), spaced from each other, are provided on the first surface (1a), while two auxiliary electrodes (22), spaced from each other, are provided on the second surface (1b). The auxiliary electrodes face the main electrodes (21) via the resistor element (1). The main electrodes (21) and the auxiliary electrodes (22) are made of the same material.

Abstract: A sheathed element for a heater plug for diesel engines includes a hollow metal sheath that is open at one end, has a closed opposite end, and defines a cavity. A heating element is positioned in the cavity and the cavity is filled with insulating powder. An elastomeric seal is positioned in the open end of the sheath. The seal has an annular projection that projects from a surface of the seal and establishes a sealing contact with a respective seat of the sheath so that, when the seal is inserted into the seat, the projection removes particles present on an internal wall of the seat.

Abstract: A cartridge heater assembly to be swaged has a sheath with head and slug ends. A resistance heater unit in the sheath includes a flat rectangular core, a resistance wire winding on the core, and first and second core covers, one on each side. Each end of the resistance wire extends from the core through a hole in the adjacent core cover and to the head end of the sheath. Crushable heater unit centralizers at each end of the sheath hold the resistance heater unit. Leads are connected to the ends of the heater wire and the connections are enclosed in the centralizer. A plastic bushing closes the head end of the sheath and a slug closes the slug end of the sheath. The heater assembly is filled with an insulating material and swaged, crushing the centralizers.

Abstract: A cartridge heater, wherein the terminal lead pins which project from the terminal end of the heater at the outer surface of the electrical insulating end plug, are substantially reduced in length and provided with at least one flat planar surface on what was originally the cylindrical surface of each lead pin. The terminal ends of the external flexible lead wires are then fused to the flat surfaces on each of the lead pins by means of brazing, soldering or welding. An end adapter unit having two longitudinal bores is then threaded up over the two flexible lead wires until the outer casing, which encloses an electrical insulating core having the two circular bores for the flexible wires, is telescoped over the terminal end of the cannister which encloses the cartridge heater.

Abstract: An electrical cartridge heater includes a flat rectangular core of mica. A resistance wire is helically wound around the mica core. A cover sheet of mica is placed on one face of the wound core so that a return wire extends back without shorting against the other wires. The mica core is received in recesses in head and slug end bushings to position the element centrally within a cylindrical shell. A granular fill surrounds the core and heating element within the shell.

Abstract: A soldering iron bit is heated by an electrical heating element including a resistive element consisting of granular boron carbide packed in a quartz tube embedded in a piece of copper. A first power lead is electrically connected to the boron carbide at one end of the quartz tube. This first power lead passes through and is electrically insulated from the piece of copper. The second power lead is electrically connected to the boron carbide at the other end of the quartz tube, either directly or via the piece of copper. In use, connection of the first and second leads to an electrical power source causes the resistive element to generate heat in a very fast manner and to transmit this heat to the piece of copper. The piece of copper may be connected to or constitute the soldering bit and can be provided with a built-in thermostat comprising a meltable salt inserted in a hole provided in the piece of copper.

Abstract: An electrical heating element comprises a resistance wire embedded in a refractory material contained in a tubular casing.The casing has the shape of a closed ring which has a U-shaped cross-section. The cross-section is closed by a cover, the opposite sides of the cover being covered by the curved arms of the "U" of the casing.This heating element can be used in the construction of hot plates for domestic appliances such as cookers or cooking surfaces.

Abstract: A unitary integral electrically heated nozzle device for plastic molding or die casting equipment which has a novel casing integral with a heater core, which is insulated to prevent conduction of electricity and loss of thermal transmission to the casing, the electrical insulation being compacted within the casing and around the heater core and the assembly being sealed and swaged into a unitary form, said device being structured to heat the area of a gate or passage for delivery of molten material into a forming cavity. The nozzle device may be shaped, and the nozzle systems include such nozzle devices in the gate channels for delivering molten material to the forming cavity.

Abstract: A cartridge-type electric immersion heating element having an integrally contained, self-limiting thermostatic control included in its electrical circuit includes an electric resistance heating element embedded in compacted powdered insulating material partially filling a tubular metallic sheath open at one end. A preset thermostat is located within a thermostat sleeve positioned in close proximity with the sheath wall and has an end embedded in the insulating material. The thermostat is connected in series circuit with the heating element and the ends of power supply leads enter the sheath through the open end thereof. A body of potting compound, such as epoxy resin, completely fills the remainder of the sheath, seals the open end thereof and encapsulates the other end of the sleeve and the power supply lead ends whereby the sleeve and thermostat are securely held in position in the sheath.

Abstract: An elongated heater unit including an elongated resistor helix, terminals connected to the ends of the helix, at least a first surrounding metallic sheath, powder insulation material disposed within the first sheath and spacing the resistor helix from the sheath. The sheath is provided with at least one indentation and/or groove extending along at least a portion of the length of the first sheath. The method for constructing the heater unit includes forming the indentation by means of a roll with a protrusion, by utilizing a mandrel, by utilizing a temperature sensitive member or by utilizing a reducing sheath.

Abstract: Elecric cartridge heater having an electric heating conductor in a metallic casing and held on a support of insulating material, each of the ends of the conductor being connected with a lead of lesser electrical resistance than the heating conductor and extending through the open end of the casing the opposite end of which is closed and the conductors being electrically insulated from the heating conductor. The insulating material, preferably magnesium oxide, fills the casing and is present between the casing and the heating conductor and being compacted by diametric reduction or compression of the casing.

Abstract: An aquarium heater having a heat resistant plastic housing. A heat producing electric resistance wire is positioned in the plastic housing in an aluminum foil container. In one embodiment, the container is an aluminum foil pouch which encloses the heat producing electric resistance wiring. The aluminum foil pouch is filled with sand. In another embodiment, the aluminum container is an annular pan and the electrical resistance wire is coiled in the pan.

Abstract: A heater element is formed by disposing a pair of heater wires and a pair of thermocouple wires and a powdered mineral material in a metal sheath which is subjected to repeated drawing and annealing operations and is then cut to a desired length after which at one end, the heater wires are welded together and the thermocouple wires are welded to the sheath and the sheath is welded to form a closed end wall. At the opposite end, the heater and thermocouple wires are connected to suitable connection wires. The sheath is formed into a helical coil structure and installed in a runnerless bushing of a plastic molding machine.

Abstract: An aquarium heater including an elongated heater element including an insulating member and a wire heater extending from one end of the insulating member to the other end of the insulating member and with an outer sheath of insulating material having open and closed ends for enclosing the heater element at the closed end and having an inner dimension larger than the outer dimension of the heater element and with a pair of spacer members disposed individually at each end of the insulating member of the heater element for spacing the heater element from the inner surface of the outer sheath and with the spacer members including means for retaining the ends of the wire heater in fixed positions at each end of the insulating member and with a resilient sealing element disposed from the open end of the sheath to seal the heater element in the closed end of the sheath and with the sealing element including grooves for passing electrical wires for supplying electrical energy to the wire heater.

Abstract: A glow plug for rotary piston engines adapted to be mounted in an engine plug hole so as not to project from the plug hole and to be traversed by a flow of fuel-air mixture temporarily trapped in the plug hole. The plug includes an elongated protective tube providing a straight root portion by which it is supported from a plug housing adapted to be inserted in a plug hole. The tube terminates in a closed end hook-shaped free tip portion spaced from the root portion and plug housing and lying in the same plane as the root portion. A helical heater coil is disposed in the protective tube with the pitch of the coil being smaller at the free tip portion than at the root portion so that greater heat is generated in the free tip portion than in the root portion.

Abstract: A bilateral heater unit including an elongated sheath in the form of two substantially parallel adjacent leg portions interconnected by a return bend portion formed of the elongated sheath bent back upon itself and integral with the adjacent parallel extending leg portions. Each of the leg portions is provided with a terminal portion extending outwardly from the end of the leg portion and spaced from the sheath. A resistor assembly is secured between the terminal of each of the leg portions and extends along the sheath between the terminals, the sheath between the terminals being filled with compacted powder insulation spacing the resistor assembly from the sheath. The parallel extending leg portions have opposing inner surfaces thereof spaced from one another and the resistor assembly may include at least one electrically conductive member extending within the sheath along the portion thereof for producing a non-heat generating zone thereat.

Abstract: A heater unit of bilateral construction is formed by forming a resistor assembly of a resistor helix extending between cylindrical terminals and overlapping the same, inserting the assembly in a sheath tube, filling the tube with MgO powder, placing laminated mica end plugs over the terminals and extending into the ends of the tube, bending the tube into a U-shape, pressing the legs of the U together and feeding the pressed unit through swaging dies to deform the tube over the entire length thereof to provide a heater unit of substantially circular cross section and having two legs of substantially semicircular cross section. The resistor helix in the area of the leg portions has a cross-sectional shape corresponding to the cross-sectional shape of the sheath and the terminals and mica plugs within the sheath are flattened to provide a similar cross-sectional shape thereby locking the terminals within the sheath.

Abstract: A torpedo heater device for plastic molding or diecasting equipment comprised of a novel casing having an integral heater core and means to seal the casing for retaining the heater core in place and preventing loss of thermal transmitting packing contained in the casing, and which is structured to receive the heater core in the area close to its tip, which is tapered. The casing may also include a probe for a thermocouple or a thermocouple well.

Abstract: A heater unit of bilateral construction is formed by forming a resistor assembly of a resistor helix extending between cylindrical terminals and overlapping the same, inserting the assembly in a sheath tube, filling the tube with MgO powder, placing laminated mica end plugs over the terminals and extending into the ends of the tube, bending the tube into a U-shape, pressing the legs of the U together and feeding the pressed unit through swaging dies to deform the tube over the entire length thereof to provide a heater unit of substantially circular cross section and having two legs of substantially semicircular cross section. The resistor helix in the area of the leg portions has a cross-sectional shape corresponding to the cross-sectional shape of the sheath and the terminals and mica plugs within the sheath are flattened to provide a similar cross-sectional shape thereby locking the terminals within the sheath.